Other Parts Discussed in Thread: ISO1640
Hi,
My I2C signal didnt cross the ISO1640.
I am sure that the power supply on the is right.
My Schematic are as follow:
The signal on the side1 is correct while the signal on the side2 keeps in high level.
Data in the scope are as follow:
Can you please check my schematic?What may cause this problem?
I have changed a new chip for the test, but the problem still exist.
I wonder if a cap on the I2C bus is a must?
Please let me know if u need further information, THANK YOU!
Best,
ZHUO